Year	current US$
1991	111500000
1992	12069999.6948242
1993	15350000.3814697
1994	52430000.3051758
1995	58860000.6103516
1996	118489997.86377
1997	124239997.86377
1998	210509994.506836
1999	168309997.55859402
2000	184839996.33789098
2001	149600006.10351598
2002	189289993.28613302
2003	289559997.558594
2004	272410003.66210896
2005	225199996.94824198
2006	178729995.727539
2007	261250000
2008	337679992.675781
2009	273670013.42773396
2010	211990005.493164
2011	201029998.779297
2012	131860000.610352
2013	90760002.1362305
2014	92800003.0517578
2015	81699996.9482422
2016	62779998.779296905
2017	59490001.6784668
2018	79989997.8637695
2019	53610000.6103516
2020	73970001.2207031
2021	57549999.237060495
2022	73819999.6948242